Need some help guys first time with sli just bought 2 evga 7800gts co edition cards installed latest drivers worked fine scored over 10,000 in 3d mark05 but now ive got issues.When running 3dmark im getting very erratic frame rates like in the first scene of the benchmark my framerates will drop to 14 fps at times in sli mode and then jump up to like 50 fps then iot turns into a slide show for a second then back up the framerates are all over the place tried the 70 series drivers all the up to the latest drivers sometimes it will not even make it all the throught the tests says 3dmark05 has encounterd a problem and will shut down.Tried reinstalling 3dmark05 no change but it it better with some drivers than others oh and tried running rthdribl it acts strange there too frame rates surge high then down to 5 fps then back up then back down any of you sli veterans got any ideas on what i could do to resolve this?